Steam-generator.



' No. 757,413. PATENTED APR. 12, 1904.

' H. E. RIDER.

STEAM GENERATOR.

V APPLIOATION FILED APR. 24, 1901. RENEWED DEC. 29, 1902. N0 MODEL.

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No. 757,413. PATENTED APR. 12, 1904.

EJE. RIDER. STEAM GENERATOR.-

APPLIOATION FILED APR 24, 1901; RENEWED D150. 29. 1902. N0 MODEL. I 3BEEETS-SHEET.2.

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UNITED STATES Patented April 12, 1904,

PATENT OFFICE.

HERFERT E. RIDER, OF NEW YORK, N.- Y.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent N0. 757,413, dated April12, 1904. .Applioation filed April 24,1901. Renewed December 29, 1902.Serial No. 137,066. .(No model.)

To all whom it may concern:

Be it known that I, HERBERT E. RIDER, a citizen of the United States,and a resident of the borough of Manhattan, in the county of New York,city of New York, and State of New York, have invented certain new anduseful Improvements in Steam-Generators, of which the following is aspecification, refer ence being had to the accompanying drawings,forming part thereof.

My invention relates to steam-generators; and it consists in theprovision of improved means for insuring the delivery of dry steam fromthe boiler or generator and for the effective prevention of priming,such means consisting of a reflecting-plate interposed between thewater-line and the steam-outlet of the generator, and in making thisreflectingplate of such construction that it may be collapsed andreadily removed through a handhole, and in the combination of suchreflecting and separating means with steam-generator-tubes terminatingabove the water-line, and more particularly in the combination of suchreflecting means with loop-shaped generator-tubes through which anactive circulation is effected, such as are shown and claimed in myapplication for Letters Patent filed July 17, 1900, under Serial No.23,885.

My invention also includes various improvements in construction andcombinations of parts, as hereinafter particularly described.

I will now describe the construction of steam-generators illustrated inthe accompanying drawings and will thereafter point out the invention inclaims.

Figure 1 is a vertical sectional elevation of a steam-generatorembodying my invention. Fig. 2 is a horizontal section of the same onthe line 2 2, Fig. 1. Fig. 3 is a horizontal section of a modifiedconstruction. Fig. 4 is a vertical sectional elevation of the same.

The steam-generator illustrated in Figs. 1

by brackets 5 5, shown as riveted to the shell (Z and bolted to thecasing a and consisting of vertical webs and flanges, soas not to mate-vrially impede the circulation of the heated gases upwardly from thecombustion-chamber 6 through the annular space between the shell 0? andcasing 62;, in which the supportingbrackets are located and out throughthe'uptake or flue connection 0. The lower portion of the interior ofthe casing forms the combustion-chamber 6.

The shell 0? is provided at the top with a head It, which may be securedthereto by riveting and is closed at the bottom by acrownsheet z', whichmay be riveted to the sides of the shell in the usual manner. A numberof looped or U- shaped generator-tubes j are supported in thecrown-sheet and have their looped portions projecting into thecombustion-chamber and their ends terminating in the interior of theshell. The two ends of each tube 7' are of unequal length, the shorterend connecting with the interior of the shell at a point below thewater-line, preferably at a point in close proximity with the bottom ofthe shell, and the longer end connecting with the interior of the shellat a point above the water-line, and hence opening into a space whichforms the steam-space of the shell. As a result of this construction thegeneratortubes have two points of communication with the interior of theboiler, subjected to different pressures, the gravity of the water abovethe shorter end of the generator-tube being constantly exerted at theshorter end of the generator-tube and a constant and effectivecirculation through the tubes will be caused thereby. Also as a resultof this construction the steam escaping from the longer end of the tubedoes not have to pass through the water in the boiler, but passes fromthe tube directly into the steam-space. I have found, however, that thecirculation through the looped tubes is so rapid that particles of waterare carried with thesteam out of the upper ends of the looped tubes andinto the steam-space, and for the purpose of effectively preventing thedelivery of water with the steam through the delivery-pipe m and doingaway with the necessity of a superheater or water-separating trap Iprovide within the boiler a separating device consisting of arefleeting-plate 7, arranged within the boiler directly above the upperends of the loopshaped generator-tubes j, and which receive the impactof the upwardly-flowing steam and water particles escaping from theseupper ends of the generator-tubes and effectually separates the waterparticles from the steam. The plate 7 is sufiiciently large to interposea reflecting-surface to the upper ends of all of the generator-tubes,but does not entirely fill the boiler, leaving a sufiicient annularspace for the upward circulation of the separated steam. I also providefor the insertion and removal of this plate 7 through a hand-hole bymaking the plate of several slightly overlapping sector-shaped parts andfitting the same rotatively upon a central axis and arranging thesesector-shaped parts in diiferent planes, so that they may be rotatedinto such position that one will be above another and the total widthwill be only that of a single sector-shaped part. This construction isillustrated in Figs. 1 and 2, and the plate 7 there shown is centrallysupported on across-bar 8, riveted at its ends to the sides of theshell, the central portion 9 of the plate being bolted to the middle ofthe cross-bar 8. A hand-hole closed by a plate 10 is shown in the headA, through which the sectional plate may be inserted or removed.

In the construction shown in Figs. 3 and 4 the reflecting-plate 7 ismade in one piece, supported by brackets 11 11, shown as secured totlfielplate by bolts and riveted to the boilers e In the constructionshown in Figs. 1 and 2 the loop-shaped generator-tubes j are secured inthe crown-sheet 2', whereas in the modified construction shown in Figs.3 and 4: the loopshaped generator-tubes jare secured in groups in plugsis, these plugs being shown as externally screw-threaded and screwedupwardly into the crown-sheet. To further strengthen the boiler,stay-bolts 17 are provided, passing through the head it of the boilerand through perforations in the plate 7 and into the tubecarrying plugs76.

In the construction in Figs. 3and 4 the head it of the boiler isremovable, being bolted to a flange at the top of the shell, and theplate 7 is removable as a whole after removal of the head k, and theplugs in are also removable; but the removal of the head h and plate 7will permit access to all portions of the interior of the boiler whichwill need to be cleaned, as the rapid and active circulation through thegenerator-tubes j will keep their inner surfaces at all times clean.

The construction of boiler illustrated in Figs. 3 and 4 is adapted foruse on automobiles, the heating part consisting of a naphtha or vaporburner g, supported on brackets 12 and having draft-openings 13therethrough and gas-escape orifices 14 arranged about these openings.The vapor enters through nozzle 15 and takes up the required amount ofair for a Bunsen flame at the funnel-shaped mouth 16.

It is evident that various modifications may be made in theconstructions above described within the spirit and scope of myinvention.

What I claim, and desire to secure by Letters Patent, is-

1. The combination, in a steam-generator, j of a combustion-chamber, ashell, and one or more generator-tubes having or each having a loopedportion extending from the shell into the combustion-chamber and exposedfreely on all sides to the heated gases therein from 5 the point whereit leaves the shell to the point where it again enters the shell, andhaving ends of unequal length, the shorter ends terminating in theboiler below the water-line and the longer ends entering the boilerbelow the 5 water-line and extending up therein above the water-line,and a reflecting-plate arranged within the shell directly above theupper end or ends of the generator tube. or tubes, substantially as setforth. v

2. In a steam-generator, the combination with a shell, of a collapsiblereflecting-plate composed of overlapping sections pivoted on a centralaxis, such reflecting-plate being arranged within theshell and in thesteam-space 9 thereof between the water-line and the steamoutlet of thegenerator, substantially as set forth.

3. In a steam-generator, the combination with a shell and one or moregenerator-tubes I extending upwardly therein and terminating above thewater-line, of a collapsible reflecting-plate composed of overlappingsections pivoted on a central axis, such reflecting-plate being arrangedwithin the shell above the end I or ends of the generator tube or tubes,substantially as set forth.

4. In a steam-generator, the combination with a shell and one or moregenerator-tubes having or each having an end terminating be- 1 low thewater-line and an end terminating above the water-line, of a collapsiblereflecting-plate composed of overlapping sections pivoted on a centralaxis, such reflectingplate being arranged within the shell and I abovethe upper end or ends of the tube or tubes, substantially as set forth.

5. In a steam-generator, in combination, a combustion-chamber, a shell,one or more generator-tubes having or each having a looped I portionextending from the shell into the combustion-chamber and exposed freelyon all sides to the heated gases therein from the point where it leavesthe shell to the point where it again enters the shell and having endsof un- 1 equal length terminating respectively below and above thewater-line, and a collapsible reflecting-plate composed of overlappingsections pivoted on a central axis, such reflecting-plate being arrangedwithin the shell directly above the upper end or ends of the generatortube or tubes, substantially as set forth.

6. In a steam-generator, in combination, a casing having acombustionchamber therein, a shell within the casing and arranged abovethe combustion-chamber with an annular space between the shell andcasing and brackets whereby the shell is supported in the'casing,U-shaped generator-tubes arranged with their looped portions within thecombustion-chamber and having ends of unequal length which projectthrough the crown-sheet of the shell into the interior thereof, theirshorter ends terminating below the water-line and their longer endsextending up therein above the water-line terminating above thewater-line, and a reflecting-plate arranged within the shell directlyabove the longer ends of the generator-tubes, substantially as setforth.

7 In a steam-generator, in combination, a combustion-chamber, acylindrical shell arranged above the combustion-chamber and having ahand-hole and plate therein, and a collapsible reflecting-plate composedof overlapping sector-shaped sections of smaller diameter than the shelland pivoted on a central axis, such reflecting-plate being arrangedwithin the shell and in the steam-space thereof between the water-lineand the steam-outlet of the generator, substantially asset forth,

8. In a steam-generator, in combination, a casing having acombustion-chamber therein, a cylindrical shell within the casing andarranged above the combustion-chamber with an annular space between theshell and casing and brackets whereby the shell is supported in thecasing, U-shaped generator-tubes arranged with their looped portionswithin the combustion-chamber and having ends of unequal length whichproject through the crownsheet of the shell into the interior thereof,their shorter ends terminating below the Water-line and their longerends terminating above the water-line, the shell having a hand hole andplate therein, and a collapsible re-' fleeting-plate composed ofoverlapping sector-shaped sections of smaller diameter than the shelland pivoted on a central axis, such reflecting-plate being arrangedwithin the shell and directly above the longer ends of thegenerator-tubes, substantially as set forth.

Signed at New York, N. Y., this 22d day of April, 1901.

HERBERT E. RIDER.

Witnesses:

HERBERT H. GIBBs, HENRY D. WILLIAMS.

